<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        input{
            display: flex;
            justify-content: flex-end;
            width: 550px;
            height: 40px;
            border-top-left-radius: 8px;
            border-bottom-left-radius: 8px;
            border: 2px solid slategrey;
        }

        input:focus{
            outline: none;
            display: flex;
            justify-content: flex-end;
            width: 550px;
            height: 40px;
            border-top-left-radius: 8px;
            border-bottom-left-radius: 8px;
            border: 2px solid #4766d6;
        }
    </style>
</head>
<body>
<input>

</body>
</html>